Home / 72,071.28-99,449.04-40,241.52

Finding the Fourth Proportional to 72,071.28, 99,449.04 and 40,241.52

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Solution

The fourth proportional to 72,071.28, 99,449.04 and 40,241.52 is: 55,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,071.28 : 99,449.04 = 40,241.52 : x
  2. Step 2: Convert to fraction form
    72,071.28/99,449.04 = 40,241.52/x
  3. Step 3: Cross multiply
    72,071.28x = 99,449.04 × 40,241.52
  4. Step 4: Simplify right side
    72,071.28x = 4,001,980,532.14
  5. Step 5: Solve for x
    x = 4,001,980,532.14/72,071.28
  6. Step 6: Final answer
    x = 55,528.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.